Gas cock



Dec. 28, 1948.l w, s, KINCMP? GAS COCK Filed Sept. 25, 1944 INVENTOR.

WILLIAM $.KINCAID ATTORNEYS FIGB.

Patented Dec. 28, 1948 UNITED STATES PATENT OFFICE j GAS COCK William S.Kincaid .Detroit, Mich., assigner to The Roberts BrassManufacturing-Company, Detroit, Mich., a corporation of MichiganAppiicatmn september 25, 1944, serial No. 555,683

The invention relates to gas cocks more par ticularly designed for usein controlling gas burners. Y s j l It is the object of the invention toobtain a construction by which the cock may be adjusted to a pluralityof diierent positions for imposing different restrictions to' the ilowof gas so as to correspondingly regulate the flame of the burner. Tothis end the invention consists in the construction as hereinafter setforth. V

Inthe drawings: i Fig. 1 is a side elevation of my improved gas cock;

Fig. 2 is an elevation viewed at right angles to Fig. 1 and with the capandvalve plate removed;

Fig. 3 is an elevation of thevalve-plate;

Fig. 4 is a cross section onA line 4v4, Fig.` 1;

Fig. 5 is a cross section on line `55, Fig. 1;

Fig. 6 is a similar section with the latch member removed;

Fig. 7 is a plan view of the latch plate detached; i i

Fig. 7A is a side elevation thereof; i

Fig. 8 is an enlargedsection through fthe cock4 on line 8-8, Fig. 1;

Figs. 9, 10 and 11 are views `simi1ar--to.Figi` 8 showing the plug valvein different positions of adjustment; l i f Fig. 12 is a view similar toFig. 2 showing the valve plate in position but with the cap removed; and1 n Fig. 13 is an elevation of the plug' Valve` and latch plate removedfrom the casing.

The cock is of the type comprising a casing A having a tapering rotaryhollow plug valve B therein provided with a port C for" registering withthe inlet passage D in the" casing. The outn let passage E is inalignment with the plug and is in constant communication with thechamber therein. Thus, when the plug valve is turned with the port C outof registration withthe passage D, communication between the 'passages Dand E is cut off. On the other hand, when the port C is in full orpartial registration with the passage D, gas will ilow from the latterto the outlet E.

'I'he construction as thus far described visfthe ordinary constructionof gas cock.` With this it is possible to regulate theflo'wof gastherethrough by turning the plug intov different positions but it isdifficult to accomplish this with fany desired degree of accuracy. Itis, therefore, the primary object of my invention `to obtain alvconstruction in which different positions of adjustment of fche valvewill predeterminedly control the ilow ofithe `accomplished by the gastherethrough with great accuracy. This is `following construction.Within "the casing A at one side thereof is formed a chamber F which isconnected to the inlet passage D by a bypass G. The chamber F is alsoconnected with a plurality of ports I-I, I leading -to the seat for theplug valve B. These ports are so positioned that the port C of the valvemay be registered with each when completely out of registration with anylother port or with the passide of the recess F which plate engages ashoulder in aj' nipple A on the casing `A. The plate is securedto thecasing by screws L and the metering pins J `and J extend respectivelyinto the "ports H and I and may be adjusted to variably 4restrict thesame. are engageable for adjustment by a screwdriver,

Slotted heads J 2 on these pins and springs J3 between said heads andthe plate K hold the same in adjusted position. The plate K and pins Jand J are enclosed by `a cap M threadedly engaging the nipple A.

The valve B has an operating stem N extending outward therefrom beingflattened' on one side for non-rotatably engaging a socket in the handlemember O. To hold the Valve in itsI different positions of adjustment, Ihave provided a latch mechanism comprising a member P slidably andnon-rotatably engaging' Ythe flatten stem N. A spring Q on the stemyieldably urges the member P in an outward direction. R is a platesecured to the casing A by screws R and apertured for the passage of thestem N. This plate has a plurality of rounded projections R2forengagement with recesses P' in the member P. These projections andrecesses are so located as to engage with each other in the differentpositionsof adjustment of the valve in which the port C is registeredrespectively with the passage D, the p ort Hor the port I.` The spring Qyieldably presses the member P against the plate 'R so that theprojections R? will snap into latching en gagement with the recesses P'in each position of adjustment but without interfering with furtheradjustment when desired. A projection P2 on the member P engagesshoulders A2 on the casing A to limit the rotative adjustment of thestem. Thus, in use the operator by turning the handle O can adjust thecock from the position shown in Fig. 9 where the gas is completely cutoi to any one of the positions respectively shown in Figs. 8, l and 11.vIn Fig. 8 the flow Qt lgas from the inlet D to the outlet E isunrestricted. In Fig. 10 the flow through the port I is restricted bythe metering pin J and in Fig. 11 the flow through the port H isrestricted by the metering pin J.

To adjust the valve for use with .diner-.ent line gas pressures, the capM may be removed and the metering pins J and J adjusted *by vascrewdriver until the desired flow of gas is obtainedy through each ofthe ports H and I. The cap 'M may then be replaced. In the process ofconstruction, the chamber F is formed in the nipple A before the ports Hand lI and `by-pass G are .formed in the casing A. By referringto Figs.8, 9, .10 andv 1-1 respectively, it will be noted that the chamber F isLat the outer ends vof the ports H and I and byf-pass G, hence saidports H and I and by-pass G `may be formed by drilling the casing A fromthe base of the chamber F before the closure plate K and cap M areapplied to said casing. Gas is always 'free to flow from the inletpassage D via the bypass G to the chamber F, and the metering pins J'and J" carried by said closure plate K control .the -low of gas 'fromsaid vchamber F to the port C `in the Valve B.

What I claim as my invention is:

A1. A valve cock comprising a casing having `va seat fora rotary valve,inlet and outlet passages nleading from said seat, said outlet passagebeing in axial alignment with said seat, and said inlet 'passageextending laterally from .sa-id seat, a chamber at one side of said seatandzopening outwardly, a by-pass between said inlet passage and -saidchamber, a pair of laterally spaced'ports vtex- -tending between saidchamber` and valve seat, the construction and arrangement of ,saidbypass, spaced ports and chamber being ysuch that 1 saidspaced ports andby-pass are accessible from said 'chamber and may be formed in'saidcasing by drilling said casing from `the zbase of said chamber, aremovable closure for said chamber, means-carried by said closure forcontrolling .said spaced ports, and a rotary valve engaging l,said

of spaced passages connecting said recess with said chamber, a removableclosure plate for said recess, detachable means accessible from theexterior of said body for securing said plate ovei` said recess,separately adjustable metering means carried by said plate forcontrolling said spaced passages, a removable cover plate concealing andprotecting saidclosure gplate and said metering means, and a rotaryvalve in said chamber having a port adapted to register with said inletpassage and alternately with said spaced passages.

` 4. In a valve of the character described, a valve I body having avalve chamber for the reception seat and having a port adapted toregister with said inlet passageandzalternately with saidfspaced .parte2. In alvalveof the class described, a-:yalve body having a `chamber for.a rotary lvalve, inlet ,and ,outlet passages communicating with `saidvchamber, v.said -valve body having an outwardly yAlpen recess'at .oneside ofsaidchamber, a tby-pass :trom said jinlet `passage to saidrecess, a plurality agi spaced v'passages connecting said recess withsaid chamber, la removable closure Aplate -for fsaid recess, detachable-means accessible from fthe :exte- .rior of said body for securing saidplateover said rrecess, individually adjustable .metering means ,carriedby lsaid plate rfor controlling .said spaced passages, and a rotaryvalve .in-said'chamber hav- ,ing `a port adapted to register -with said`.inlet .passage and-alternately with said spaced ,passages :3. Inaivalveof -tlflezclass described, a-Valve-bod-y having a -chamber forrotary valveinlet :and `outlet l.passages communicating withsaidcharnber, said .valve body having Aan outwardly l open .recess .at oneside of .said chamber, .a ,byepass from fsad .inlet passage .to :saidrecess, a ,plurality of va .rotary vall', an inlet passage and aplurality `of ports vspaced circumferentially around 'said chamber, anyoutlet passage leading from said chamber, an xoutwardly open recess insaid body at the outer ends of said spaced ports, a by-pass between saidinlet passage and said recess, a removable closure plateffor saidrecess, separately adjustable metering means carried bysaid plate 'forcontrolling said spaced passages, and a rotary valve in said'chamberhaving a port adapted to register with said inletzpassage and`alternately with lsaid `spaced `ports.

5. AIn a valve of thecharacter described, a valve body -hayi-ng ya-valve .chamber for `.the reception of a :rotary valve, .an .inletpassage and a plurality .of ports lspaced .circumierentially yaround.said chamber, an outlet ,passage leading from said chamber, an outwardlyopen :recess -in said body at the outer ends .of said v.spaced ports, aby--pass between said inlet passage and said recess, a removable closurelate for vvsaid recess, means carried yby said plate lfor`controllingfsaid spaced passages, ,and a rotary valve vin saidchamberhaving .sa port adapted to register with'said inlet passage andvalternately with said spaced ports. 6. vA gas cock `comprising a casinghaving a seat for a rotary valve, inlet and outlet passages leadinglfrom .said fseat, a chamber at one side of said seat and openingoutwardly, a by-pass between said inglet passage and said chamber, a.plurality -of yports leading from said chamber to spaced points of saidvalve seat, a removable `clolsure'plate vfor said chamber, separatelyadjustable `metering pins .,threadedly engaging said closure platerespectively in alignment with said spaced ports and accessibleexternally vof said chamber for adjustment purposes, and a rotary valvelengaging the seat aforesaid and having a port adapted 1to register :withsaidinlet passage and alternately with .said spaced por-ts.

7., A gas 4cock 'comprising .a casing having a vseat for a rotary valve,`inlet and outlet passages .leading -from said seat, a chamber 'at oneside of said ,seat andopening outwardly, a Aby-pass between `said rinletpassage and said chamber, a ,pair of substantially'parallel vportsvleading. from 'said chamber to gspaced -points of said Valve seat,substantial-ly Iparallel lseparately adjustable nie- `tering pins forcontrolling said parallel ports, `a common carrier l,for .said meteringpins carried -by said casing vand forming .a closure ,plate for ,thechamber aforesaid, said closure plate being removable from said casing,and a rotary .valve engaging :fthe `seat aforesaid and 'having a portadapted Eto register with said inletfpassage and alternately Ywith saidspaced 4ports.

f8. .A gas ,cock .comprising ,a casing :havingg'a .seat for ,a rotaryvalve, inlet and outlet passages,

the outlet ,passage .being in axial .alignment with said inlet passageand said chamber, a plurality of ports leading from said chamber tospaced positions in said valve seat, a removable closure plate for saidchamber, separately adjustable metering pins threadedly engaging saidclosure plate respectively in alignment with said ports and adjustableexternally of said chamber, a cap for enclosing said metering pins, anda rotary valve engaging said seat and having a port adapted to registerwith said inlet passage and alternately with said spaced ports, theconstruction and arrangement of said chamber, spaced ports and by-passbeing such that said spaced ports and by-pass may be formed in saidcasing by drilling the latter from the base of said chamber before theclosure plate and cap are applied to said casing. A

9. A gas cock comprising a casing having a seat for a rotary valve,inlet and outlet passages, the outlet passage extending axially of saidseat and the inlet passage extending laterally from said seat, alaterally extending chambered nipple with the chamber thereof openingoutwardly, a by-pass between said inlet passage and said chamber, aplurality of ports leading from said chamber to spaced positions in saidvalve seat, a removable closure plate for the chamber in said nipple,separately adjustable metering pins threadedly engaging aperturesthrough said plate and in alignment respectively with said ports, saidpins being externally adjustable to variably restrict said ports, a capthreadedly engaging said nipple to enclose said metering pins, a rotaryvalve engaging said seat in constant communication with said axialpassage and having a port adapted to register with said inlet passageand alternately with said spaced ports, and a latch mechanism foryieldably holding said valve in different positions Where the porttherein is in registration respectively with said inlet passage and saidspaced ports.

WILLIAM S. KINCAID.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 778,988 Merritt Jan. 3, 19051,708,276 Marks Apr. 9, 1929 1,838,870 Roberts Dec. 29, 1931 2,113,027Kindl Apr. 5, 1938 2,160,358 Harper May 30, 1939 2,160,419 Mueller July4, 1939 2,299,665 Turner Oct. 20, 1942

